Breyer Extrusion

Calenders for Li Ion Battery Foil

Calendering Lines

The new generation of the BREYER calenders represents a milestone in improving lithium-ion electrode film production.

The production of an electrode film (anode, cathode) requires high and individually adjustable line loads on the calender and high-precision calibration. The extremely low tolerances required in the calendering process are a challenge for the machine itself.

BREYER’s many years of experience in the field of calender system production enabled the development of a system that complies with the high precision standards in the production of electrodes. The precise and reliable calender system allows for extremely low thickness tolerances.


Technical Specifications

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Line speed | 0.5 – 100 m/min
Roller temperature control | water / thermal oil
Roller widths | 600, 800 mm
Roller diameter | up to 800 mm
Roller surface | hard chrome-plated / carbide
Roller gap adjustment | servo-hydraulic control
Precision | ± 2 µm
Line loads | up to 4000 N/mm


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  • Fast and reproducible thickness adjustment  
  • Variably adjustable line load up to 4000 N/mm
  • Direct gap measurement
  • Defined compression via servo-hydraulic roller adjustment for distance and force 
  • Lowest possible thickness tolerances 
  • Powerful individual drives 
  • Safety system 
  • Compact design  
  • Convenient user interface, easy operation 


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  • Foil for Cathode
  • Foil for Anode

Why Breyer Calenders?

Conventional System

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In the case of standard calenders with mechanical adjustment systems between the rollers, part of the force is diverted via the adjustment system and therefore does not make it onto the product surface. Higher line forces are required. The bearings and system are subject to higher loads and the adjustment of the product thickness is often difficult.

Breyer System

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With the special BREYER calender technology, the forces directly flow via the roller onto the coating. The adjustment of the force and product thickness can be defined.


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